71843834172 has 96 divisors (see below), whose sum is σ = 190967906304. Its totient is φ = 20808849600.

The previous prime is 71843834141. The next prime is 71843834233. The reversal of 71843834172 is 27143834817.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4457913 + ... + 4473999.

It is an arithmetic number, because the mean of its divisors is an integer number (1989249024).

Almost surely, 2^71843834172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71843834172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95483953152).

71843834172 is an abundant number, since it is smaller than the sum of its proper divisors (119124072132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71843834172 is a wasteful number, since it uses less digits than its factorization.

71843834172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17599 (or 17597 counting only the distinct ones).

The product of its digits is 903168, while the sum is 48.

The spelling of 71843834172 in words is "seventy-one billion, eight hundred forty-three million, eight hundred thirty-four thousand, one hundred seventy-two".